docs: def securityHandler(self, value):
          """ sets the security handler """
          if isinstance(value, BaseSecurityHandler):
              if isinstance(value, (security.AGOLTokenSecurityHandler,security.PortalTokenSecurityHandler,security.ArcGISTokenSecurityHandler)):
                  self._securityHandler = value
  
              else:
                  raise AttributeError("Admin only supports security.AGOLTokenSecurityHandler")